(07-02-2015, 23:53 )RatInACage Ha scritto: ...pensavo si parlasse di Rockford!

buono il Punch

Citazione:Rockford engineers designed the Punch 2-channel  amplifiers to withstand

the rugged automotive environment while delivering superior sound quality
in a flexible, reliable, and efficient package. TRANS•ANA is a low voltage
circuit in the preamp stage of all Punch amplifiers that lets the music sound
crystal clear and very real, even when played at high volume levels. This is
matched with TOPAZ, a unique grounding circuit used to eliminate noise
problems associated with car audio systems and their installation. Flexibility
is accomplished with the use of a built-in crossover. The use of a protection
circuit called NOMAD, along with MOSFET and DSM (Discrete Surface
Mount) technologies improve amplifier efficiency. The result of these
components give the Punch amplifier awesome sound quality in a “Bullet
Proof” package. An explanation of these technologies, most of which are
exclusively designed and patented by Rockford, are described in the
Technical Design Features.

Citazione:TRANSana (TRANSconductance Active Nodal Amplifier): The TRANSana is a circuit that allows the audio signal to pass through the amplifier at low voltage. The signal is directly level-shifted to the fixed high voltage rails via a pair of drive transistors. Signal linearity is assured by an active node formed  by the drive transistors at ultrasonic frequencies. The result is crystal clear sound quality, even at high volume levels.

MEHSA (Maximum Efficiency Heat Sink Application): MEHSA is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. The multi-layer insulated metal MEHSA substrate operates with minimal thermal resistance, spreading heat both downward and outward to quickly dissipate heat from each device across the heatsink. This allows greater power output, enhanced thermal stability, and maximum reliability.
TOPAZ (Tracking Operation Pre-Amplifier Zone): TOPAZ is a circuit that simply eliminates noise. The TOPAZ circuit allows the amplifier ground to move with the source unit ground, creating a "noise elimination" zone just before the preamp section. If there is any noise in the ground coming down the RCA line to the amplifier, TOPAZ amazingly tracks it down and eliminates it. The result is a 30-40dB improvement of the isolation between input ground and chassis ground.
DSM (Discrete Surface Mount): In the manufacturing process high speed robotics are used to place 0% tolerance resistors and large board traces providing greater reliability and efficiency.
NOMAD (NOn-Multiplying Advanced Decision): NOMAD is an intelligent protection circuit that uses an analog computer to make real time decisions regarding temperature, voltage, current and impedance. The unit is protected without limiting sound output unless needed.